Thor plc has the following events occur between the end of the reporting period and the date the financial statements were authorised for issue:

1 The discovery that, during the reporting period, an employee had defrauded the business of £120,000.

2 The bankruptcy of a customer who owes the business £280,000. This sum was outstanding at the end of the reporting period.

3 A fire occurring after the reporting period that destroyed a large factory owned by Thor plc.

4 An increase in the value of land held by Thor plc by £10 million resulted from a change in the planning laws, which occurred after the end of the reporting period.

According to IAS 10 (Events after the Reporting Period), how should each of these events be treated?